/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshBasicEditFunctions.h
Removes a triangle from the mesh as indicated by the Triangle ID. Should the delete fail, e.g. if the specified triangle was not a mesh element, the flag bWasTriangleDelete will be set to false.
static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * DeleteTriangleFromMesh ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, int TriangleID, bool & bWasTriangleDeleted, bool bDeferChangeNotifications )